DBAL-50 - Fix two bugs occuring when new index handling is mixed with ORM...

DBAL-50 - Fix two bugs occuring when new index handling is mixed with ORM (which produces an additional set of very long automatically generated identifiers) in automatic identifier name generation.

lib/Doctrine/DBAL/Schema/AbstractAsset.php

@@ -84,7 +84,12 @@ abstract class AbstractAsset
         $identifier = trim(implode("_", $parts), '_');
         // using implicit schema support of DB2 and Postgres there might be dots in the auto-generated
         // identifier names which can easily be replaced by underscores.
-        $identifier = str_replace(".", "_", $identifier);
+        $identifier = str_replace(array(".", " "), "_", $identifier);
+
+        if (is_numeric(substr($identifier, 0, 1))) {
+            $identifier = "i" . substr($identifier, 0, strlen($identifier)-1);
+        }
+
         return $identifier;
     }
 }
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